Patent CA980199A successfully refreshed from Google Patents.
Patent US5028639A successfully refreshed from Google Patents.
US5028639A
Expired / Lapsed
US
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Water dilutable coating compositions
Assignee: BASF Farben und Fasern AG
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Filing: 1990-10-31
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Granted: 1991-07-02
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Expires: 2010-10-31
Abstract
Abstract The invention relates to water-dilutable coating compositions which contain a binder, an aluminum pigment and an aqueous diluent. The water-dilutable coating compositions according to the invention are distinguished in that they contain, as the aluminum pigment, a pigment which has been obtained by passivating a lubricant-containing aluminum pigment in an aqueous passivating solution which contains chromic acid and a water-soluble glycol ether of the general formula R 1 --(--O--CHR 2 --CH 2 --) n --OH (R 1 represents a lower alkyl radical, R 2 represents either an H atom or a lower alkyl radical, preferably a --CH 3 group, and n represents a number from 1 to 5) and/or a water-soluble glycol of the general formula HO--(CHR 3 --CH 2 --O--) n H (R 3 represents either an H atom or a lower alkyl radical, preferably a --CH 3 group, and n represents a number from 1 to 5), at not less than 50° C., preferably 60° to 90° C., particularly preferably about 80° C.
Inventors
- 👤 Roland Treutlein
- 👤 Bodo Muller
- 👤 Peter Mayenfelds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:18
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/38; C09C; C09C1/00; C09C1/62; C09C1/64; C09C1/644; C09C1/648; C01; C01P; C01P2004/00; C01P2004/20; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
123 words
A water-dilutable coating composition which contains a binder, an aqueous diluent and an aluminum pigment which has been obtained by passivating a lubricant-containing aluminum pigment in an aqueous passivating solution which contains chromic acid and a water-soluble glycol ether of the general formula R 1 --(--O--CHR 2 --CH 2 --) n --OH, wherein R 1 represents a lower alkyl radical, R 2 represents either an H atom or a lower alkyl radical and n represents a number from 1 to 5, or a water-soluble glycol of the general formula HO--(--CHR 3 --CH 2 --O--) n H wherein R 3 represents either an H atom or a lower alkyl radical n represents a number from 1 to 5, at not less than 50° C.
Claim 2
Dependent Claim
123 words
A water-dilutable coating composition which contains a binder, an aqueous diluent and an aluminum pigment which has been obtained by passivating a lubricant-containing aluminum pigment in an aqueous passivating solution which contains chromic acid and a water-soluble glycol ether of the general formula R 1 --(--O--CHR 2 --CH 2 --) n --OH, wherein R 1 represents a lower alkyl radical, R 2 represents either an H atom or a lower alkyl radical and n represents a number from 1 to 5, or a water-soluble glycol of the general formula HO--(--CHR 3 --CH 2 --O--) n H wherein R 3 represents either an H atom or a lower alkyl radical n represents a number from 1 to 5, at not less than 50° C.
Claim 3
Dependent Claim
17 words
A water-dilutable coating composition as claimed in claim 1, wherein the lubricant-containing aluminum pigment contains fatty amines.
Claim 4
Dependent Claim
39 words
A water-dilutable coating composition as claimed in claim 1 or 2, wherein the aqueous passivating solution contains at least 1.5% by weight of chromic acid and 3 to 30% by weight of water soluble glycol ether or water-soluble glycol.
Claim 5
Dependent Claim
21 words
A water-dilutable coating composition as claimed in one claims 1 or 2 wherein the water-soluble glycol ether employed is n-butyl glycol.
Claim 6
Dependent Claim
19 words
A water dilutable coating composition as described in claim 1 wherein the lubricant-containing aluminum pigment is passivated at60°-90° C.
Claim 7
Dependent Claim
21 words
A water dilutable coating composition as described in claim 5 wherein the lubricant containing aluminum pigment is passivated at 80° C.
Claim 8
Dependent Claim
22 words
A water-dilutable coating composition as described in claim 3 wherein the aqueous passivating solution contains 1.5 to 4.0% by weight chromic acid.
Claim 9
Dependent Claim
18 words
The water-dilutable coating composition of claim 7 wherein the aqueous passivating solution contains 2% by weight chromic acid.
Claim 10
Dependent Claim
27 words
The water-dilutable coating composition of claim 3 wherein the aqueous passivating solution contains 7-15% by weight of a water soluble glycol ether or a water soluble glycol.
Claim 11
Dependent Claim
22 words
The water-dilutable coating composition of claim 3 wherein the aqueous passivating solution contains 10% by weight water-soluble glycol ether or water-soluble glycol.
Claim 12
Dependent Claim
14 words
The water-dilutable coating composition of claim 1 wherein R 2 represents a methyl group.
Claim 13
Dependent Claim
16 words
The water-dilutable coating composition of claim 1 or 11 wherein R 3 represents a methyl group.
Claim 14
Dependent Claim
123 words
A process for preparing an aluminum pigment which can be employed in water-dilutable coating compositions comprising: passivating a lubricant-containing aluminum pigment at a temperature of not less than 50° C. in an aqueous passivating solution which contains chromic acid and a water-soluble glycol ether of the general formula R 1-- (--O--CHR 2 --CH 2 --) n --OH, wherein R 1 represents a lower alkyl radical; R 2 represents either an H atom or a lower alkyl radical, and n represents a number from 1 to 5, or a water-soluble glycol of the general formula HO--(--CHR 3 --CH 2 --O--) n H wherein R 3 represents either an H atom or a lower alkyl radical and n represents a number from 1 to 5.
Claim 15
Dependent Claim
123 words
A process for preparing an aluminum pigment which can be employed in water-dilutable coating compositions comprising: passivating a lubricant-containing aluminum pigment at a temperature of not less than 50° C. in an aqueous passivating solution which contains chromic acid and a water-soluble glycol ether of the general formula R 1-- (--O--CHR 2 --CH 2 --) n --OH, wherein R 1 represents a lower alkyl radical; R 2 represents either an H atom or a lower alkyl radical, and n represents a number from 1 to 5, or a water-soluble glycol of the general formula HO--(--CHR 3 --CH 2 --O--) n H wherein R 3 represents either an H atom or a lower alkyl radical and n represents a number from 1 to 5.
Claim 16
Dependent Claim
24 words
A process for the preparation of an aluminum pigment as described in claim 13 wherein the lubricant-containing aluminum pigment is passivated at 60°-90° C.
Claim 17
Dependent Claim
25 words
A process for the preparation of an aluminum pigment as described in claim 14 wherein the lubricant-containing aluminum pigment is passivated at about 80° C.
Claim 18
Dependent Claim
19 words
A process for the preparation of an aluminum pigment as described in claim 13 wherein R 2 is methyl.
Claim 19
Dependent Claim
21 words
A process for the preparation of an aluminum pigment as described in claim 13 or 16 wherein R 3 is methyl.
Claim 20
Independent Claim
109 words
A method of coating a substrate comprising applying to the substrate a water-dilutable coating composition comprised of a binder, an aqueous diluent and an aluminum pigment obtained by passivating a lubricant-containing aluminum pigment at not less than 50° C. in an aqueous passivating solution containing chromic acid and a water soluble glycol ether of the formula: R.sup.1 --(--O--CHR.sup.2 --CH.sub.2 --).sub.n --OH wherein R 1 represents methyl; R 2 represents H or methyl; and n is a number from 1 to 5; or a water soluble glycol of the formula: HO--(--CHR.sup.3 --CH.sub.2 --O--).sub.n --H wherein R 3 is H or methyl and n is a number from 1 to 5.
Claim 21
Independent Claim
109 words
A method of coating a substrate comprising applying to the substrate a water-dilutable coating composition comprised of a binder, an aqueous diluent and an aluminum pigment obtained by passivating a lubricant-containing aluminum pigment at not less than 50° C. in an aqueous passivating solution containing chromic acid and a water soluble glycol ether of the formula: R.sup.1 --(--O--CHR.sup.2 --CH.sub.2 --).sub.n --OH wherein R 1 represents methyl; R 2 represents H or methyl; and n is a number from 1 to 5; or a water soluble glycol of the formula: HO--(--CHR.sup.3 --CH.sub.2 --O--).sub.n --H wherein R 3 is H or methyl and n is a number from 1 to 5.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |